My room has 1.2 ton (1190W) window AC (some 5 star Hitachi from 2011 with EER 3.28). If I run it for 6 hours (at auto mode) it consumes like 7 units. If I opt for some inverter AC of present how much savings will I be looking at? Also, whether there are any non inverter ACs which can save power as well? I don't use my unit due to high power usage, if it were low I would use it for like 12 hours every day.
This is a unit which was serviced only once in its lifetime. I presume with inverter ACs servicing is needed on yearly basis?
